The name is derived from such Polish place names (settlement names) as Domaniewice, Domaniewo or Domanice with the suffix -ski and refers to a place of residence, origin or estate. It may also be derived from the Polish given name Doman (originating from the given name Damian) with the suffix -ski, imitating the structure of surnames derived from place names with the same suffix, and refer to the connection with the father or another ancestor by that name. Variant: Dumański.